I had the same problem on a recently installed Kubuntu 24.04 system on HP ProBook 450 G1 (Haswell i5, with integrated graphics). Kernel is 6.8.0-71. Cold boot was working fine, but on *reboot* I got a black screen at the LUKS password prompt, so not seeing the HP and Kubuntu boot logos. Please note that, if I typed the password blindly, the boot process was then proceeding successfully, and the system in the end was starting. However, it was quite annoying not to see anything.
Adding i915 to /etc/initramfs-tools/modules and running "update- initramfs -u" fixed he problem for me too. It was not easy to find this bug report though, since searching for "reboot problems" was leading to a lot of other "black screen on boot" problems, unrelated to this one, including an (already fixed) sddm problem for Kubuntu. Never had this problem with Kubuntu 20.04 or on 16.04 and 14.04 bases. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2091864 Title: Cannot enter luks password at boot after kernel 6.8.0-50 upgrade Status in linux package in Ubuntu: Confirmed Bug description: Upgraded Ubuntu 24.04 software, including kernel 6.8.0-50, after which upon booting the luks password couldn't be entered (dialog unresponsive). Was able to boot 6.8.0-49. Could boot 6.8.0-50 with quiet splash commented out - with text input. Added i915 (my video driver) to /etc/initramfs-tools/modules and updated initrd, after which could boot 6.8.0-50. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2091864/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
